Here's my experiences with hands-on-healing.
I decided to try and heal a bruise on my torso I got playing basketball. It was about the size of a quarter and purple.
I began with Dantien meditation for about 10 minutes. When I felt ready, I said to myself "I am going to heal the bruise on my torso." I placed my hand on my side, near the waist, over the bruise. I rubbed my hands together, and put my right hand over it. I began to deep breath Buddhist style while focusing on my Qi as a golden-white healing light and using my Yi to move the Qi into the bruise. I focused and perceived the negative energy of the bruise as a red, painful, stagnant energy. I began to focus on the idea of unconditional love and used my will to "overwrite" the red energy with my healing Qi.
After about 5 minutes, my side became quite hot under the hand. It also tingled immensely. I put all of my concentration on the Qi going to the bruise. I could perceive Qi flowing from the Dantien to my right hand, and also coming up the leg meridians from the ground, and the meridian of my other arm which was just loose at my side. Also, I could perceive Qi coming from the air around my right hand to the area of the bruise.
I did this for about 15 minutes total, and the next day the bruise had gone from being purple to being a light brown. The next day it was gone. Usually, a bruise that size and darkness would stay visible for about a week, so I think it worked.